CV500BC031 Omron, CV500BC031 Datasheet - Page 281
CV500BC031
Manufacturer Part Number
CV500BC031
Description
Programmable Logic Controller
Manufacturer
Omron
Datasheet
1.CV500BC031.pdf
(403 pages)
Specifications of CV500BC031
Peak Reflow Compatible (260 C)
No
Leaded Process Compatible
No
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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Calculation Example
8-2-2
256
Communications Cycle Time
Inactive Data Links
The number of bytes in each message differs according to the instruction
being issued.
Communications conditions are as follows:
In this example, A to E in the equation have the following values.
The communications cycle time is thus as follows:
The following equations are used to calculate a communications cycle time
when the data link is inactive.
Wired Systems
Baud rate
2 Mbps
1 Mbps
500 Kbps
SEND
RECV
CMND
Instruction
Transmission medium:
Baud rate:
Network parameters:
Max node address:
Polled nodes per comm cycle:
Event-frames per comm cycle:
Network configuration:
Total number of data link words:
Nodes that send messages:
Bytes in all messages sent:
A:
B:
C:
D:
E:
10 × 8,000 + 600 × 4 + 290 × 8 + 320 × 2 + 4 × 4,024 + 3,290 = 104,746 ( µ s)
≅ 105 (ms)
Note B: Number of polled nodes per communications cycle
8,000
4
8
2
4,024
C: Number of nodes connected to network
D: Number of nodes that send messages during the
E: Total number of bytes in messages transmitted during the
600 × B + 110 × C + 320 × D + 4 × E + 2,290 (µs)
1,150 × B + 150 × C + 360 × D + 8 × E + 2,690 (µs)
2,260 × B + 230 × C + 440 × D + 16 × E + 3,490 (µs)
(value specified in the network parameter)
communications cycle
communications cycle
Number of words to be sent × 2 +
18
18
Number of bytes in command
data + 10
When sent
Equation
Twisted-pair cable
2 Mbps
Defaults
32
4
35
8 nodes
8,000 words
2 nodes
2,012 × 2 bytes
14
Number of words to be received
× 2 + 14
Number of bytes in response
data
When received
Section 8-2
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